import type { LayerDefinition } from 'style/style.spec.js';
import type WebGLContext from 'gl/context/context.js';
import type WebGPUContext from 'gpu/context/context.js';
import type { BBox, Face, S2CellId, VectorPoint } from 'gis-tools/index.js';
import type { Features as FeaturesGL, TileMaskSource as MaskSourceGL } from 'gl/workflows/workflow.spec.js';
import type { Features as FeaturesGPU, TileMaskSource as MaskSourceGPU } from 'gpu/workflows/workflow.spec.js';
import type { InteractiveObject, SourceFlushMessage, TileFlushMessage } from 'workers/worker.spec.js';
import type { Projector, TmpWMID } from 'ui/camera/projector/index.js';
/** A tile's 4 corners. */
export interface Corners {
    topLeft: VectorPoint;
    topRight: VectorPoint;
    bottomLeft: VectorPoint;
    bottomRight: VectorPoint;
}
/** gets all viable keys from all interfaces in a union. */
export type AllKeysOf<T> = T extends unknown ? keyof T : never;
/** Allows a type to be extracted from a union. */
export type Get<T, K extends keyof any, Fallback = undefined> = T extends Record<K, any> ? T[K] : Fallback;
/** takes a union of interfaces and merges them so that any common key is a union of possibilities. */
export type Combine<T> = {
    [K in AllKeysOf<T>]: Get<T, K>;
};
/** Shared Context found in both WebGLContext and WebGPUContext. */
export type SharedContext = Combine<WebGLContext | WebGPUContext>;
/** Shared Features found in both WebGLContext and WebGPUContext. */
export type SharedFeatures = Combine<FeaturesGL | FeaturesGPU>;
/** Shared MaskSource found in both WebGLContext and WebGPUContext. */
export type SharedMaskSource = Combine<MaskSourceGL | MaskSourceGPU>;
/** A FaceST that will be encoded into the GPU */
export type FaceST = [
    face: number,
    zoom: number,
    sLow: number,
    deltaS: number,
    tLow: number,
    deltaT: number
];
/**
 * # Tile Base Interface
 *
 * tiles are designed to create mask geometry and store prebuilt layer data handed off by the worker pool
 * whenever rerenders are called, they will access these tile objects for the layer data / (vaos/bindgroups)
 * before managing sources asyncronously, a tile needs to synchronously build spherical background
 * data to ensure we get no awkward visuals.
 */
export interface TileBase<C, F, M> {
    id: S2CellId;
    face: Face;
    i: number;
    j: number;
    zoom: number;
    bbox: BBox;
    division: number;
    tmpMaskID: number;
    interactiveGuide: Map<number, InteractiveObject>;
    uniforms: Float32Array;
    bottomTop: Float32Array;
    state: 'loading' | 'loaded' | 'deleted';
    type: 'S2' | 'WM';
    faceST: FaceST;
    corners?: Corners;
    wrappedID?: TmpWMID;
    dependents: Array<TileBase<C, F, M>>;
    matrix: Float32Array;
    context: C;
    featureGuides: F[];
    mask: M;
    layersLoaded: Set<number>;
    layersToBeLoaded?: Set<number>;
    flush: (data: TileFlushMessage | SourceFlushMessage) => void;
    deleteLayer: (index: number) => void;
    reorderLayers: (layerChanges: Record<number, number>) => void;
    injectInteractiveData: (interactiveGuide: Uint32Array, interactiveData: Uint8Array) => void;
    getInteractiveFeature: (id: number) => undefined | InteractiveObject;
    injectParentTile: (parent: TileBase<C, F, M>, layers: LayerDefinition[]) => void;
    injectWrappedTile: (wrapped: TileBase<C, F, M>) => void;
    setScreenPositions: (projector: Projector) => void;
    addFeatures: (features: F[]) => void;
    delete: () => void;
    deleteSources: (sourceNames: string[]) => void;
}
/** TileBase with shared context. */
export type Tile = TileBase<SharedContext, SharedFeatures, SharedMaskSource>;
/** TileGL context */
export type TileGL = TileBase<WebGLContext, FeaturesGL, MaskSourceGL>;
/** TileGPU context */
export type TileGPU = TileBase<WebGPUContext, FeaturesGPU, MaskSourceGPU>;
/** Shared context found in both WebGLContext and WebGPUContext. */
export type TileShared = TileGL & TileGPU;